How do I unlock my phone without a code (Galaxy 4)?

[AC Question]

i bought a used phone and i cant unlock the code to open it its a galaxy 4

i bought a used galaxy 4 that i cant unlock how do i get samsung kies

 

[B. Diddy]

Re: i bought a used phone and i cant unlock the code to open it its a galaxy 4

Welcome to Android Central! Do you mean you can't unlock the lockscreen, or you can't unlock the phone to use on your wireless carrier?